83 lines
No EOL
2.5 KiB
PHP
83 lines
No EOL
2.5 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2010, The volkszaehler.org project
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* @package data
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* @license http://www.opensource.org/licenses/gpl-license.php GNU Public License
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*/
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/*
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* This file is part of volkzaehler.org
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*
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* volkzaehler.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* volkzaehler.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with volkszaehler.org. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace Volkszaehler\Interpreter;
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/**
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* sensor interpreter
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*
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* @package data
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* @author Steffen Vogel <info@steffenvogel.de>
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*/
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class SensorInterpreter extends Interpreter {
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/**
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*
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* @param integer $from timestamp in ms since 1970
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* @param integer $to timestamp in ms since 1970
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*/
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public function getValues($from = NULL, $to = NULL, $groupBy = NULL) {
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$data = parent::getData($from, $to, $groupBy);
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array_walk($data, function(&$reading) {
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$reading['value'] /= $reading['count']; // calculate average (ungroup the sql sum() function)
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});
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return $data;
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}
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/**
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*
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* @param integer $from timestamp in ms since 1970
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* @param integer $to timestamp in ms since 1970
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*
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* @todo untested
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*/
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public function getMin($from = NULL, $to = NULL) {
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return $this->dbh->query('SELECT value, timestamp FROM data WHERE channel_id = ' . (int) $this->id . self::buildFilterTime($from, $to) . ' ORDER BY value ASC', 1)->current();
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}
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/**
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*
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* @param integer $from timestamp in ms since 1970
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* @param integer $to timestamp in ms since 1970
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*
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* @todo untested
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*/
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public function getMax($from = NULL, $to = NULL) { // TODO untested
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return $this->dbh->query('SELECT value, timestamp FROM data WHERE channel_id = ' . (int) $this->id . self::buildFilterTime($from, $to) . ' ORDER BY value DESC', 1)->current();
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}
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/**
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*
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* @param integer $from timestamp in ms since 1970
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* @param integer $to timestamp in ms since 1970
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*
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* @todo untested
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*/
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public function getAverage($from = NULL, $to = NULL) { // TODO untested
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return $this->dbh->query('SELECT AVG(value) AS value FROM data WHERE channel_id = ' . (int) $this->id . self::buildFilterTime($from, $to))->current();
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}
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}
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?>
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